Abstract: A vibration damper for a fuel conduit of a gas turbine combustor includes a mounting portion and a damping portion. The mounting portion is secured to the fuel conduit, and the damping portion includes a stack of damping washers, a bushing on top of the stack of damping washers, a spring clip secured around the stack of damping washers and the bushing, and a shoulder bolt disposed through the bushing and the stack of damping washers and engaged to the mounting portion.

Abstract: Systems and methods of recommending replacement of printheads. In an embodiment, a system trains a first neural network to generate anomaly scores for printheads using an unsupervised learning algorithm based on first training samples of conforming printhead data from a pool of conforming printheads. The system generates a training dataset for a recurrent second neural network by identifying training printhead data for a pool of training printheads, inputting second training samples of the training printhead data into the first neural network to generate training anomaly scores for the training printheads over a plurality of time units, and formatting third training samples for the training printheads. The system trains the recurrent second neural network to generate scaled anomaly scores for printheads using a supervised learning algorithm based on the second training dataset.

Abstract: Systems and methods of recommending replacement of printheads. In an embodiment, a system identifies deployed printhead data for a plurality of deployed printheads, operates a first neural network trained to generate deployment anomaly scores for the deployed printheads, operates a recurrent second neural network trained to scale the deployment anomaly scores generated by the first neural network to produce scaled anomaly scores for the deployed printheads, and provides a replacement recommendation for one or more of the deployed printheads based on the scaled anomaly scores for the deployed printheads.

Abstract: A heterogeneous rubbery polymer is provided that includes a polymer chain derived from a vinyl aromatic monomer and a conjugated diolefin monomer, wherein from greater than 20 weight percent to about 40 weight percent of units in the rubbery polymer are derived from the vinyl aromatic monomer and from about 60 weight percent to about 80 weight percent of units in the rubbery polymer are derived from the conjugated diolefin monomer. The polymer chain is further characterized by having greater than zero and less than about 30 weight percent of the vinyl aromatic units in sequences containing 1 vinyl aromatic unit, from about 5 weight percent to about 20 weight percent of the vinyl aromatic units in sequences containing 5 to 8 vinyl aromatic units, and greater than zero and less than about 5 weight percent of the vinyl aromatic units in sequences containing 9 or more vinyl aromatic units.

Abstract: A heterogeneous rubbery polymer is provided that includes a polymer chain derived from a vinyl aromatic monomer and a conjugated diolefin monomer, wherein from greater than 20 weight percent to about 40 weight percent of units in the rubbery polymer are derived from the vinyl aromatic monomer and from about 60 weight percent to about 80 weight percent of units in the rubbery polymer are derived from the conjugated diolefin monomer. The polymer chain is further characterized by having greater than zero and less than about 30 weight percent of the vinyl aromatic units in sequences containing 1 vinyl aromatic unit, from about 5 weight percent to about 20 weight percent of the vinyl aromatic units in sequences containing 5 to 8 vinyl aromatic units, and greater than zero and less than about 5 weight percent of the vinyl aromatic units in sequences containing 9 or more vinyl aromatic units.

Abstract: This invention is based upon the unexpected discovery that alkylated diphenylamines can be used in conjunction with nickel based catalyst systems which contain (a) an organonickel compound, (b) an organoaluminum compound, and (c) a fluorine containing compound to produce cis-1,4-polybutadiene having reduced molecular weight and an increased level of branching. This results in the cis-1,4-polybutadiene exhibiting good processability without sacrificing cold flow characteristics. Additionally, the alkylated diphenylamine which remains in the rubber acts in a manner which provides it with antioxidant protection. In other words, the use of alkylated diphenylamines accomplishes the three major objectives that are realized by employing para-styrenated diphenylamines (reduced molecular weight, regulated polymer macrostructure through branching and antidegradant protection).

Abstract: The present invention reveals a tire having a tread that is comprised of (1) 30 phr to 80 phr of a non-random styrene-butadiene rubber comprised of polymer chains that are derived from styrene and 1,3-butadiene, wherein from about 10 weight percent to about 50 weight percent of the repeat units in the styrene-butadiene rubber are derived from styrene, wherein from about 60 weight percent to about 90 weight percent of the repeat units in the styrene-butadiene rubber are derived from 1,3-butadiene, wherein from about 30 weight percent to about 50 weight percent of the styrene repeat units are in sequences containing 5 to 20 styrene repeat units, wherein the bound styrene content found in the first half of the polymer chains differs from the bound styrene content found in the second half of the polymer chains by at least 5 weight percent, wherein the styrene-butadiene rubber has a 1,2-vinyl content which is within the range of about 8 percent to about 20 percent, wherein the styrene-butadiene rubber has a number

Abstract: The present invention discloses a technique for reacting a first liquid chemical compound with a second liquid chemical compound which comprises (1) supporting the first liquid chemical compound on a solid support; (2) subsequently bringing the solid support into contact with the second liquid chemical compound; and (3) allowing the first chemical compound to react with the second chemical compound in the presence of a phase transfer catalyst to produce a reaction product. This technique is particularly useful in the synthesis of sulfur containing organosilicon compounds of the formula Z-Alk-Sn-Alk-Z wherein Z is selected from the group consisting of wherein R1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; wherein R2 is an alkoxy group of 1 to 8 carbon atoms or a cycloalkoxy group of 5 to 8 carbon atoms; wherein Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; and wherein n is an integer of 2 to 8.